This chapter deals with the motion of rigid bodies, starting with the kinematics of translation, rotation and arbitrary motion. This is followed by the determination of so-called velocity diagrams, with the help of which the kinematics of the movements of rigid bodies and systems of rigid bodies can be determined. We will also look at the kinetics of rigid body movements, starting our investigations by considering the kinetics of a rotation around a fixed axis. An important characteristic quantity in the treatment of rotational motions is the so-called mass moment of inertia, the determination of which for various basic forms of rigid bodies is the subject of a separate section. Another section is dedicated to the treatment of the kinetics of the planar motion of rigid bodies. This chapter concludes with an overview of the kinetics of spatial rigid body motions.